MESON Chess Problem Database

Problem Display
PID: 232326 (4K3/2p5/3k4/8/2Q2P2/8/8/8 w - - 0 1)

Speckmann, Werner

Deutsche Schachzeitung, 1971

4K3/2p5/3k4/8/2Q2P2/8/8/8

#2

3 + 2

15148 Sadier Collection 2021
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Qd4+?
      • 1...Ke6
        • 2.Qe5#
      • 1...Kc6!
    • 1.Qc5+?
      • 1...Ke6
        • 2.Qe5#
      • 1...Kxc5!
  • Keys
    • 1.Qb5!
      • 1...Ke6
        • 2.Qe5#
      • 1...c5
        • 2.Qd7#
      • 1...c6
        • 2.Qe5#

This anticipates 178032(1979)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT,XQ(A)
  • Actual
    • Q(A);
    • Vars
      • K(a);P-FLIGHT::QAR1(A)
      • P(b);SBLOCK::QAR1(A)
      • P(b);SBLOCK::QAB1(A)
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